World's Largest Distributed New Energy Phase Modifier Cluster Goes into Operation

The first 16 50-megavar distributed phase modifier of the first phase of the Qinghai-Henan ultra-high voltage (UHV) direct current (DC) power transmission project went into operation on Nov 26.

Located in the Hainan Tibet Autonomous Prefecture in Qinghai Province, the first phase project included construction of the supporting facility of the large-scale clean energy power generation base.

The facilities, which include 16 phase modifiers and supporting equipment of four 330-kilovolt pooling stations, were built and adjusted by China Energy Engineering Group Zhejiang Thermal Power Construction Co., Ltd. and East China Electric Power Test Research Institute Co., Ltd.

A view of a pooling station of the Qinghai-Henan UHV DC power transmission project [Photo/sasac.gov.cn]

Phase modifiers are the voltage stabilizers of the power grid. Their operation in Hainan prefecture is expected to help stabilize voltage caused by cross-regional DC power transmission and large-scale connection of new energy, and will render the Qinghai-Henan UHV DC power transmission project capable of transmitting 4 million kilowatts of power and contributing to China's goal of peak carbon dioxide emission by 2030 and carbon neutrality by 2060.

In addition, the phase modifiers will also help improve the new energy transmission capacity of the country's west-east power transmission project and demonstrate centralized development of large-scale new energy.

(Executive editor: Niu Yilin)